using Nancy;
using Nancy.Extensions;
using Nancy.ModelBinding;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Text;
using 电子展板.Base;
using 电子展板.Utility;
using 电子展板.Utility.Core;
using 电子展板.Utility.Extension;
using 电子展板.Utility.Logs;
using 电子展板.Utility.Other;

namespace 电子展板
{
    public class WebModule : NancyModule
    {
        public WebModule()
        {
            //默认页面
            Get("", Index);
            Get("/", Index);
            Get("/index.html", Index);
            //全局静态资源
            Get("/static/{name*}", StaticResource);

            //获得配置
            Get("/getConfig", GetConfig);
            //获得上传的文件
            Get("/upload/{id}", GetUploadFiles);
            //上传图片
            Post("/uploadImage", UploadImage);
            //保存配置
            Post("/save", SaveConfig);
        }
        //默认页面
        private object Index(dynamic dynamic)
        {
            return Resouce("Views/Index.html");
        }
        //全局静态资源
        private object StaticResource(dynamic dynamic)
        {
            string name = dynamic.name;
            return Resouce(name);
        }
        /// <summary>
        /// 获得配置
        /// </summary>
        /// <param name="dynamic"></param>
        /// <returns></returns>
        private object GetConfig(dynamic dynamic)
        {
            //保留JSON KEY首字母大写，这里就不用 Response.AsJson();
            //AsJson会将首字母小写
            return Response.AsText(JsonHelper.ToJson(GlobalVariable.Config), "application/json", Encoding.UTF8);
        }
       


        /// <summary>
        /// 获得上传的文件
        /// </summary>
        /// <param name="dynamic"></param>
        /// <returns></returns>
        private object GetUploadFiles(dynamic dynamic)
        {
            string id = dynamic.id;
            string contentType = System.Web.MimeMapping.GetMimeMapping(id);
            return Response.AsFile(MyEnvironment.Root("/Upload/" + id), contentType);
        }

        /// <summary>
        /// 上传图片
        /// </summary>
        /// <param name="dynamic"></param>
        /// <returns></returns>
        private object UploadImage(dynamic dynamic)
        {
            string uploadPath = MyEnvironment.Root("/Upload/");
            if (!Directory.Exists(uploadPath))
            {
                Directory.CreateDirectory(uploadPath);
            }
            List<string> filePathList = new List<string>();
            foreach (var file in Request.Files)
            {
                string ext = Path.GetExtension(file.Name);
                string fileName = UUID.StrSnowId + ext;
                var filePath = uploadPath + fileName;
                using (FileStream fileStream = new FileStream(filePath, FileMode.Create))
                {
                    file.Value.CopyTo(fileStream);
                }
                filePathList.Add($"/Upload/{fileName}");
            }
            var result = new { state = 1, message = "上传成功", data = filePathList.GetStrArray() };
            return Response.AsJson(result);  
        }


        /// <summary>
        /// 保存配置
        /// </summary>
        /// <param name="dynamic"></param>
        /// <returns></returns>
        private object SaveConfig(dynamic dynamic)
        {
            MyConfig config = this.Bind<MyConfig>();
            //string str = Request.Body.AsString();

            //MyConfig config = JsonHelper.ToObject<MyConfig>(str);
            LogHelper.Instance.Info($"用户保存了配置:{JsonHelper.ToJson(config)}");
            //保存
            PropertyInfo[] propertyInfos = typeof(MyConfig).GetProperties();
            foreach (PropertyInfo propertyInfo in propertyInfos)
            {
                object value = propertyInfo.GetValue(config);
                propertyInfo.SetValue(GlobalVariable.Config, value);
            }
            GlobalVariable.SaveConfig();
            //保存并修改界面
            EventBus.Instance.Publish("save", "");
            var result = new { state = 1, message = "保存成功" };
            return Response.AsJson(result);
        }

        private object Resouce(string resourcePath)
        {
            string packUri = $"pack://application:,,,/Assets/{resourcePath}";
            string contentType = System.Web.MimeMapping.GetMimeMapping(packUri);
            return Response.FromStream(System.Windows.Application.GetResourceStream(new Uri(packUri, UriKind.RelativeOrAbsolute)).Stream, contentType);
        }



    }
}